Template Specialization is a powerful feature to tailor class or function behavior for specific data types while maintaining a general interface for others. Betguru

C++ Class Template Specialization is a powerful feature that allows you to define custom behavior for specific data types while still leveraging the flexibility of templates. Gold365 com Login

Here is C++ Class template specialization solution - https://programmingoneonone.com/hackerrank-cpp-class-templates-problem-solution.html

include

using namespace std; enum class Fruit { apple, orange, pear }; enum class Color { red, green, orange };

template struct Traits;

template <> struct Traits { static string name(int index) { switch (index) { case 0: return "red"; case 1: return "green"; case 2: return "orange"; default: return "unknown"; } } };

template <> struct Traits { static string name(int index ) { switch (index) { case 0: return "apple"; case 1: return "orange"; case 2: return "pear"; default: return "unknown"; } } };

int main() { int t = 0; std::cin >> t;

for (int i=0; i!=t; ++i) {
    int index1; std::cin >> index1;
    int index2; std::cin >> index2;
    cout << Traits<Color>::name(index1) << " ";
    cout << Traits<Fruit>::name(index2) << "\n";
}

}

// We can represent enums like numbers

template <>
struct Traits<Color> {
    static string name(int index) {
        switch (index) {
            case 0: return "red";
            case 1: return "green";
            case 2: return "orange";
            default: return "unknown";
        }
    }
};

// Specialization for Fruit
template <>
struct Traits<Fruit> {
    static string name(int index ) {
        switch (index) {
            case 0: return "apple";
            case 1: return "orange";
            case 2: return "pear";
            default: return "unknown";
        }
    }
};